import store from '@/store'
import config from '@/config'
import {
	getToken,
	removeToken
} from '@/utils/auth'
import errorCode from '@/utils/errorCode'

import {
	TokenKey
} from '@/utils/auth.js'
import {
	toast,
	showLoading,
	hideLoading,
	showConfirm,
	tansParams
} from '@/utils/common'

let timeout = 10000
const baseUrl = config.baseUrl

const request = config => {


	// 是否需要设置 token
	let isToken = true
	config.header = config.header || {}
	let msg = null
	if (config.headers != null) {

		if (config.headers.msg != null) {
			msg = config.headers.msg
		}

		if (config.headers.isToken != null) {
			isToken = config.headers.isToken
		}
	}



	if (getToken() && isToken) {
		config.header[TokenKey] = getToken()
	}
	// get请求映射params参数
	if (config.params) {
		let url = config.url + '?' + tansParams(config.params)
		url = url.slice(0, -1)
		config.url = url
	}


	showLoading(msg)

	return new Promise((resolve, reject) => {


		uni.request({
				method: config.method || 'get',
				timeout: config.timeout || timeout,
				url: config.url.indexOf('http') == -1 ? (config.baseUrl || baseUrl + config.url) :
					config.url,
				data: config.data,
				header: config.header,
				dataType: 'json'
			}).then(response => {
				let [error, res] = response
				if (error) {
					toast('后端接口连接异常')
					reject('后端接口连接异常')
					return
				}
				const code = res.data.code || res.statusCode || 200

				const msg = errorCode[code] || res.data.msg || errorCode['default'] || res.data
					.message
				if (code === 401) {
					removeToken()
					showConfirm('登录状态已过期，您可以继续留在该页面，或者重新登录?').then(res => {
						if (res.confirm) {
							store.dispatch('LogOut').then(res => {

							}).finally(res => {
								uni.reLaunch({
									url: '/pages/login'
								})
							})
						}
					})
					reject('无效的会话，或者会话已过期，请重新登录。')
				} else if (code == 500) {
					showConfirm(msg, false)
					reject('500')
				} else if (code !== 200) {
					uni.showModal({
						title: '提示',
						content: msg,
						showCancel: false,
						confirmText: '确定',
						success: function(res) {
							resolve(res)
						}
					})
					reject(code)
				}


				//是否要提示操作成功
				if (config.task) {
					toast(res.data.msg)
				}
				resolve(res.data)
			})
			.catch(error => {
				let {
					message
				} = error
				if (message === 'Network Error') {
					message = '后端接口连接异常'
				} else if (message.includes('timeout')) {
					message = '系统接口请求超时'
				} else if (message.includes('Request failed with status code')) {
					message = '系统接口' + message.substr(message.length - 3) + '异常'
				}
				toast(message)
				reject(error)
			})
			.finally(function() {
				// 无论成功还是失败都会执行的回调函数
				hideLoading()
			});




	})
}

export default request